I agree with Dagmar and others, the only way for you to find out is to do testing. To many things can effect bubbles. The other oils and additives in the soap, the superfat, the process you used to make it, the amount of water you used, the amount of water in your soap when you tested, your water hardness and one very important fact is the way you wash your hands when you test for bubbles. Like the water temp, amount of water and how much air you trap when turning the bar.
And besides, if you really want answers you need to pay attention to the fatty acid profiles not the numbers on a
soap calculator.
Nice idea but its just not that easy.